Nokia 1600

Page 49
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Do not attempt to open the device other than as instructed 
in this guide.
Do not drop, knock, or shake the device. Rough handling 
can break internal circuit boards and fine mechanics.
Do not use harsh chemicals, cleaning solvents, or strong 
detergents to clean the device.
Do not paint the device. Paint can clog the moving parts 
and prevent proper operation.
Use only the supplied or an approved replacement 
antenna. Unauthorised antennas, modifications, or 
attachments could damage the device and may violate 
regulations governing radio devices.
Use chargers indoors.
Always create a backup of data you want to keep (such as 
contacts and calendar notes) before sending your device to 
a service facility.
All of the above suggestions apply equally to your device, 
battery, charger, or any enhancement. If any device is not 
working properly, take it to the nearest authorised service 
facility for service.